Preparation of N-Doped Visible-Light Response Nanosize TiO2 Photocatalyst Using the Acid-Catalyzed Hydrolysis Method

2006 ◽  
Vol 27 (8) ◽  
pp. 697-702 ◽  
Author(s):  
Shouxin LIU ◽  
Xiaoyun CHEN ◽  
Xi CHEN
Keyword(s):  
Visible Light ◽  
Light Response ◽  
Tio2 Photocatalyst ◽  
Hydrolysis Method ◽  
Visible Light Response ◽  
Acid Catalyzed

Depth Selective Electronic State Analysis of Implanted Nitrogen in Visible-Light Response TiO2 Photocatalyst

2007 ◽  
Vol 561-565 ◽  
pp. 567-570 ◽  
Author(s):  
Tomoko Yoshida ◽  
Shunsuke Muto ◽  
Jun Wakabayashi
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Response ◽  
Local Concentration ◽  
Spatial Distributions ◽  
Tio2 Photocatalyst ◽  
Energy Filtering ◽  
Visible Light Response ◽  
Chemical States ◽  
Nitrogen Ion

Energetic nitrogen ion was injected into a TiO2 photocatalyst in order to investigate the optimal local concentration of doped nitrogen for visible-light response. N+-implanted TiO2 samples promoted the photocatalytic activity under visible-light irradiation. N K-edge XANES of the highest activity sample indicated that N replaces the O sites near the surface, whereas in the samples of higher N+ fluence, N−O and/or N−N species formed. Depth-resolved N K-edge ELNES revealed the two types of N, depending on the concentration, and we found the local N concentration effective for visible-light response was less than ∼1 at%. Further, the spatial distributions of the different chemical states of N by energy-filtering TEM (FETEM) supported these findings.

Synthesis and Characterization of C-N-Cl-Codoped TiO2 with Enhanced Visible Light Response

2011 ◽  
Vol 382 ◽  
pp. 431-434
Author(s):  
Long Hui Nie ◽  
Zheng Qing Huang ◽  
Wang Xi Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Response ◽  
Synthesis And Characterization ◽  
Tio2 Photocatalyst ◽  
Simple Process ◽  
Codoped Tio2 ◽  
Visible Light Response ◽  
Visible Light Active

A novel visible-light-active C-N-Cl-codoped TiO2 photocatalyst was prepared by a simple process. The as-prepared sample was characterized by XRD, XPS, and UV-Vis. The analysis results showed that the as-synthesized sample was anatase and possessed a narrow bad gap of 2.4 eV after the doping of carbon, nitrogen and chlorine. An obvious absorption for visible light was observed in the range of 400~700 nm for C-N-Cl-codoped TiO2. By degrading of methyl orange (MO) solution under the visible light (l>420 nm) irradiation, the synthesized photocatalyst showed 5 times photocatalytic activity than that of P25.

Solution Processed Sb2S3-based Photocathode with Enhanced Photocatalytic Performance via Constructing Ultrathin TiO2 Overlayer and Noble Metal Modification

2021 ◽  
Author(s):  
Yanwen Wang ◽  
Rong Liang ◽  
Chao Qin ◽  
Lei Ren ◽  
Zhizhen Ye ◽  
...  
Keyword(s):  
Visible Light ◽  
Noble Metal ◽  
Photocatalytic Performance ◽  
Low Cost ◽  
Light Response ◽  
Solution Processed ◽  
Antimony Sulfide ◽  
Visible Light Response ◽  
Absorbing Material

Antimony sulfide (Sb2S3) is a light absorbing material with strong visible light response, which is suitable for efficient and low-cost photoelectrodes. Nano-structured films have unique advantages in constructing photoelectrodes due...

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